Costco Gas Stations in WI (WI)

About Costco Gas in WI (WI)

WI (WI) has 10 Costco gas stations across 10 cities. The largest concentrations of stations are in Bellevue (1), Grafton (1), and Menomonee Falls (1). Most stations open at 6 AM on weekdays and close at 10 PM. On Sundays, hours are typically 6 AM–7:30 PM. All Costco gas stations require an active membership. Payment is accepted by Visa, most debit cards, and Costco Shop Cards.

For context, the average retail price of regular gas in the Midwest (PADD 2) region was $3.94/gal (premium $5.00) the week of 2026-08-17. Costco fuel is typically priced below the local average. Source: U.S. EIA.